Why must the eyes be protected during laser?
Laser light can damage eye tissue. Everyone in the room therefore needs protective eyewear suited to the wavelength being used.
A different protective eyewear is needed for each wavelength; unsuitable eyewear does not protect. For treatments near the eyes, special shields placed over the eye may be used instead of goggles. This decision belongs to the trained practitioner.
Eye pain, blurred vision or light sensitivity after a treatment calls for an eye doctor.
What are the possible side effects of laser?
Temporary redness and swelling are common. Burns, blisters, darkening or lightening of the skin, infection and scarring are less common but can be serious.
How often side effects occur varies with the treatment, the device and skin type. Pigment problems can be a concern on darker skin and burns on lighter skin. A cold sore history can mean a flare.
For this reason history, medicines in use and expectations should be discussed at consultation. See the laser aftercare page for care details.
What determines safety?
A wavelength suited to skin type, correct settings, cooling, a test pulse when needed and a sufficiently trained practitioner are the basic elements.
Regular maintenance and a licence for the device matter too. The practitioner's knowledge of the device and of skin type counts more than the brand name. An approach built on low cost or haste is a warning sign.
Be careful where treatment starts without a consultation. The authorised doctor and licensed clinic pages offer checklists.
Which questions should be asked before the appointment?
Ask who performs the treatment, the licence status of the device, the possible risks, whether a test pulse is done and whom to contact if a problem arises.
Pregnancy, breastfeeding, isotretinoin use, recent tanning, cold sores and photosensitising medicines should be mentioned. This information can lead to postponing or changing the treatment.
Reading the informed consent form and asking about anything unclear is your right.
Frequently asked questions
Can laser be done without protective eyewear?
No. Everyone in the room needs suitable protective eyewear during treatment. Otherwise there is a risk of eye damage.
Can laser burn the skin?
There is a burn risk, and wrong settings, tanned skin or insufficient cooling can raise it. A trained practitioner and the right device reduce it.
Can laser cause discolouration?
Yes, temporary or long-lasting discolouration can occur, particularly on darker skin or on recently sun-exposed skin.
Who should perform laser treatment?
Trained, authorised health professionals in a licensed health facility, in line with regulations.
Sources (5)
- Journal of Cosmetic Dermatology: Expert Consensus on Ocular Safety During Laser Procedures: A Practical Guide to Eye Safety by a Panel of Dermatologist Laser Surgeons and Ophthalmologists (2025)
- American Academy of Dermatology: Laser hair removal: FAQs
- U.S. FDA: Frequently Asked Questions About Lasers
- European Commission, Medical Device Coordination Group: MDCG 2023-5: Guidance on qualification and classification of Annex XVI products (2023)
- Türk Dermatoloji Derneği: Sık Sorulan Sorular
This content is for general information and does not replace a personal medical assessment.